Improvement in dies for forging sheet-metal horse-collar blanks



E. B. JACKSON. Dies for Forging Sheet-Metal Horse-Collar Blanks.

No. 214,918. Patented April 29,1879.

Figil.

N. PETERS. PHOTWLITNOGRAPHER, WASNXNGTON- D Cv I upper or male sectionof the same.

UNITED STATES PATENT OFFICE.

EDGAR B. JACKSON, OF DELAWARE COUNTY, OHIO, ASSIGNOR TO LOUIS B. JACKSONAND ENDS BALDWIN, OF SAME PLACE, ONE-FOURTH TO EACH.

IMPROVEMENT IN DIES FOR FORGING SHEET-METAL'HORSE-COLLAR BLANKS.

Spec fication forming part of Letters Patent No. 214,918, dated April29, 1879; application filed August 5, 1878.

To all whom it may concern:

Be it known that I, EDGAR B. J AGKSON, of the county of Delaware, in theState of Ohio, have invented certain new and useful Improvements in Diesfor Forging Sheet-Metal Horse-Collar Blanks and I do hereby declare thatthe following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being bad to the accompanying drawings,which form a part of this specification This invention relates tosheet-metal blanks for horse-collarsthat is to say, to certain parts ofsuch collars which are made ofsheet metal, and used in combination withother parts to form the complete collar.

It consists in the peculiar construction of the dies adapted to shapefiat blanks cut from sheet metal into the shape of the blank proper,which, with its component parts, forms the complete collar-section,substantially as hereinafter more fully described, and pointed out inthe claim.

In the drawings, Figure l is a perspective view of the lower or femalesection of my improved dies. Fig. 2 is a similar view of the Fig. 3 is aperspective view of the shaped collar-blank. Figs. 4 and 5 arecross-sections of Figs. 1 and 2, taken on the lines indicated by w a:and y g, respectively; and Fig. 6 is a plan view of the flat blankfronrwhich the shaped blank or metal collar-section is struck up.

Similar letters of reference indicate corresponding parts in all thefigures.

The female section or matrix B of my improved dies consists of a heavyblock of metal cast with a high curved end, on. d, Fig. 1 for theshoulder section of the shaped blank. One side of this matrix, 0, ishigher than its opposite side, d, and the wall of the curved bottom abetween the sides 0 and d tapers both in height and width toward thefront part, which is made with a rib or feather, b, extending centrallyalong the bottom a from the end for a distance of about eight or teninches, and decreasing in height from about one inch at its base orstart to a point.

The male die A, Figs. 2 and 5, is shaped to fit the bottom a of thematrix B-that is to say, it has a shoulder, f, on one side corresponding to and impinging upon the raised part c of the matrix, and anopposite lower shoulder, 0, corresponding to and impinging upon the partor side (1 of the matrix. It also has a central longitudinal andtapering recess, b, at one end, registering with the rib or feather b inthe matrix.

The flat blank which I use with the dies A B to form the shaped collarblank or section is shown at D in Fig. 6, and the shaped blank at C inFig. 3. From this it will be seen that the flat blank (which is, bypreference, of sheetsteel, about one-sixteenth of an inch in thickness)is out with one straight, or nearly straight, edge, k, while theopposite edge is curved in a wave-line or S shape, its narrowest placebeing between I l, and greatest width between k j. This is for thepurpose of providing sufficient metal to form the raised part c, Fig. 3,of the shaped blank, which is formed by the bulging or wide part k j ofthe blank, the narrow part or flange 0 being struck up from the straightedge 70. The part increasing in width on the other side of line 1 lforms the tapering recess i in the shaped blank or section 0 and itsadjacent curved sides, which said recess forms a point of attachment foran auxiliary part entering into combination with and forming a part ofthe complete collar.

The flat blank D should first be heated to a cherry-red, and as it isgrasped by the tongs it is struck over the raised part or shoulders c dof the matrix B, which bends the blank andassists the operation of thedies. Care must be taken to so place the blank upon the lower die ormatrix that its straight edge 70 shall register with the lower frontedge or shoulder, d, after which the blank is shaped by the male die A(which is held in a drop-head) falling upon it, resulting in a shapedblank or collar-section of the configuration shown in Fig. 3. I

I am aware that it is not new to prepare shells or metallic sections forhorse-collars by striking up suitable blanks in a die or mold as shownin the Letters Patent to J. W,

Schwaner, No. 110,685, dated January 3, 1871, shown, indicated byletters 0 a d b and f e b, and I do not claim dies or molds for suchpurrespectively, and arranged and operating subpose, broadly; but,stantially as and for the purpose set forth.

Having thus described my improvement I claim and desire to secure byLetters Patebt EDGAR JACKSON of the United States- Attest:

The dies B A, for shaping sheet-metal horse- 0. H. MCELROY,

collar blanks, 0f the forms described and J. L. THURSTON.

